Burning fuse for projectiles.



K. WIESER.

- BURNING FUSE FOR PBOJECTILES.

APPLIUATIGH FILED FEB. 3, 1912.

Pabsnizefi 6013.1, 1912.

UNITED. srn'rns arana ennren.

KARL WIESER, OF BREDENEY, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELL- SCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

BURNING FUSE FOR PROdECTILES.

' Specification of Letters Patent.

Application filed February 3, 1912.

To all whom it may concern:

Be it known that I, KARL Wrnsnn, residing at Bredene'y, Germany, a subject of, the Emperor of Germany, have invented a certain new and useful Improvement in Burning Fuses for Projectiles, of which the fol, lowing is a specification.-

The subject of the present invention is a special construction of a burnin fuse for projectiles such as described in United States Patent application (Ser. l O. 655,572).

One embodiment of the invention is sh own in the accompanying drawing by way of illustration, according to which, the burning fuse is conceived in arrangement upon a projectile which contains a charge for rendering visible the path of flight and in addition thereto, is constructed as a, base chamber shrapnel.

In said drawings, Figure 1 is an axial longitudinal section ofthe fuse and the adja-- cent portions of the projectile; Fig. 2 is a section on the line 2-2 of Fig. 1, seen from above; Fig. 3 is a section on the line 3--3 of Fig. 2, viewed in the direction of the arrow 23, and Figs. 4: arid 5 show in schematic representation, two different adjustments of the fuse, being respectively sections on the line 4-4 of Fig. 1 and the line 4 4 of Fig. 2, seen from the left.

For convenience, parts hereinafter described which also exist in the previous patent above referred to, are designated by similar reference characters.

A designates the projectile shell, D the fire-duct leading from the impact charge P of the burnin fuse to the shrapnel bursting charge, arran ed in the base chamber of the projectile, and E the smoke chargei The burning fuse possesses three; superimposed composition pieces K, Hand J of which, as usual, the middle piece Hirig-L idly connected with the fuse body M, "while the uppermost compositionpiece J' and the lowermost piece K are arranged to rotate and "connected together by a coupling piece N. The arrangement of the igniting pellet which, at the firing of the projectile, produces the fire-jet and which is not shown,- as well as the fire-duct m leading to the uppermost composition piece J, are provided in a known manner. In the'fuse plate m and leading outwardly from its front face, two channels m and m are provided, whose outlets, as shown in Fig. 2, are so arranged'that they can be connected by the composition ring 70 of the lowermost composition piece K; The channel m leads to the smoke charge E and the channel m to the impact charge P. The angular distance of the outlet positions of the two channels wa and m is so measured that they define a sector upon the composition ring k when connected thereby, whose length corresponds to the time which must lapse between the ignition of the smoke charge and the ignition of the bursting charge, for example, a time of two seconds. The channel We lies in one and the same axial plane with the fire-duct 71. lead ing to the beginning of the composition ring of the stationary composition piece H, so that when the fire-ducts 2' and 70 leading to the beginning of the composition ring of the rotatable composition pieces J and K,

fire-jet can reach directly to the smoke charge E (Figs. 1 and 4). Thus, if the fuse is adjusted in the manner illustrated in Figs. 1 and 4c, the fire-jet produced in firing, strikes along the path m 2' if, 75 m immediately into the smoke charge E; production of smoke thus commencing immediately. Likewise, the composition ring 70* ofthe lowermost composition piece K is ignited, and after burning of the portion of the composition ring lying between the channels m seconds) the fire-jet reaches, through the path m, P, D, to the shrapnel charge and "causes explosion thereof. Should the rotatable composition pieces K, J, prior to firing, be rotated beyond the stated position, obvl- -ously, as will be recognized for example from Fig. 5, the space of timebetwe en the smoke charge will be increased while the space 'of time from the ignition of the smoke pharge t0 the explosion of the shrapnel nition of the smoke charge, there is always 70 of the lowermost composition piece to be burned, namely that lying between the chan nels m and of, before the fire-jet can attain the shrapnel charge.

The operation of this projectile is thus the same as described in, the principal patent. But whereas in attaining this operation in the projectile of the principal patent, a special slow burning powder substance must be are adjusted to the same axial plane, the

and m (in the example assumed, after two moment .of firing to ,the "ignition ofthe.

charge will remain the same, since after ig- .the same sized piece of the composition ring" a this is done away with in the having a. composition ring arranged to con;

:zlwm'c l ribecl projectile, since in the latnect said fire-ducts.

Tm, the composition ring if replaces'the 210- The foregoing specification signed at Bari n F lie s ow burning powder substance. men, Germany, this 13th. day of January,

clzi1m 1912. A lJUTILP 111F153 IO? pro ectiles having two KARL WIESER. s']

fireclucts, of which the one leads to the hi1 2mg cl 'g'e 27:61 the other to a smoke In presence of r l charge, a, f ..e plate, and a rotatable compo- HELEN NUFER, l0 sii'i iln piece lying above the fuse plate and A. NW3.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, I). Q. 

